URI Math Placement Exam Absolute value - answer How far away a number is from zero -whatever the answer is, but positive Absolute value brackets in equation - answer -take out brackets -turn into two equations; one positive answer, one negative -solve for x for both equations -two answers Adding fractions - answer -find least common denominator -multiply each numerator by however much it's denominator was multiplied -add new numerators, keep denominator
-SIMPLIFY
Subtracting fractions - answer -find least common denominator -multiply each numerator by however much it's denominator was multiplied -subtract new numerators, keep denominator
-SIMPLIFY
Quadratic formula - answer x= -b + or - radical (b squared - 4ac) all over 2a Multiplying fractions - answer multiply through (numerator x numerator) over (denominator over denominator)
SIMPLIFY
Dividing fractions - answer Keep. Change. Flip -KEEP first fraction -CHANGE division sign to multiplication sign -FLIP second fraction -multiply through
-SIMPLIFY
Fraction to a power - answer If fraction in parentheses:
-the whole fraction times itself x many times -multiply through
If no parentheses:
-only the number with the exponent is effected Factoring -how and what signs to use - answer SUM CENTER
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